Synthesis And Adsorption Properties For Oils Of Supported Fe₃O₄@TiO₂ On Zeolite

The oil needed increase day by day for nations of the world,the transport of oil develop quickly,so the oil spill accidents have occurred.Marine oil pollution not only threatens marine ecological security,but also affects human health by seafood.Therefore,it is extremely important for governing sea oil pollution.In this paper,fly ash as raw material,synthesize Na-P Zeolite by alkali fusion hydrothermal synthesis method,based Fe₃O₄,synthesize Fe₃O₄@TiO₂ nanometer materials by hydrothermal biomimetic synthesis method,and through the coating synthesis method to prepared magnetic molecular sieve composite,and explore the optimal condition,using SEM,XRD,BET,FT-IR,TG,DSC,VSM characterization methods,the structure and properties are tested.Finally simulated the sea spill,observe the magnetic distribution of molecular sieve composites in simulated unit and its adsorption properties of oils.This paper results as follows:1.Preparation of Na-P molecular sieve by alkali fusion hydrothermal synthesis method,the tests show that:it is the most favorable for the synthesis of Na-P zeolite molecular sieve,when the grey base ratio is 1:1.2,the crystallization temperature is90°C,the crystallization time is 24 h.The results show that Na-P zeolite molecular sieve surface is sphere,lamellar structure and large surface area.2.Preparation of Fe₃O₄ through the thermal decomposition of oleic acid iron compound,Fe₃O₄ as magnetic cores,4 isopropyl titanate as precursor,Fe₃O₄ surface coated nano TiO₂ by hydrothermal method of biomimetic synthesis,analysis the preparation of Fe₃O₄ and nano magnetic Fe₃O₄@TiO₂,the experimental results show that the TiO₂ cladding in Fe₃O₄ particles surface effectively,formed the good cladding layer.3.Using Na-P molecular sieve,and Fe₃O₄@TiO₂ as raw material,preparation load magnetic Fe₃O₄@TiO₂ molecular sieves,the results show that the magnetic Fe₃O₄@TiO₂ does not affect the skeleton structure of the molecular sieve,but affect the molecular sieve morphology.Measuring the gasoline,kerosene and heavy oil absorption ratio,is 8,22 and 48 g/g,respectively.4.Using Na-P molecular sieve and magnetic Fe₃O₄@TiO₂ materials as raw materials,preparation of different density weight by controlling the raw materials of different proportion of composite oil absorption material,and observing the composite functional material in the sea simulation device of oil absorption effect.It is found that adjusting to the amount of raw material,made of different density and weight composite functional materials,through the third party test for petroleum hydrocarbon degradation rate of water within 7 days,the average degradation rate of functional material is 58.2⁶1.3%.